When you run the solenoid test, exactly which coils aren't firing?

The clicking you hear from the backbox is likely the A/C relay which switches between flash lamps and solenoids. Not something to worry about for the moment.

Check each of the problem coils for any wires that may have broken off. The power wire going to each of the coils usually "daisy-chains" from one to the next. I think in this case the power wire is red (i may be wrong about the color, but you'll notice almost all the non-flipper coils have the same color wire in one side).

You'll notice almost all the playfield coils will have one of more red wires soldered one of it's lugs (the lug with the banded side of the diode that's also mounted on the coil). If one of those wires broke off, it may have broken the daisy-chain for the power going to the currently non-working coils. *Hopefully* an easy fix.

I've had a broken wire on the Yagov kicker cause issues like this. If your missing voltage at those non working coils check wiring at upper yagov kicker.

Check the fuse for the solenoids at F2 on the power supply board and the fuse on the small flipper power supply board below that. According to the schematic in the manual, they should both be 4a slow-blow/MDL.

Are the other problems are resolved too?

Nice! Good luck moving forward. Keep us posted if the problem persists.

Dont forget to add the fuse to the 2 rectifiers in back if you havent already.

You can delete the picture if you like by editing the post and clicking on the picture.

They're not fused on the input side on earlier system 11 games - so if they short, in theory it's supposed to blow the main fuse. Sometimes that doesn't happen and they catch on fire. Definitely add them as insurance especially for a routed game.

They are used to convert the AC to DC for a couple of the circuits I forget which 2 I think one of them is the solenoids though.

https://www.pinwiki.com/wiki/index.php?title=Williams_System_9_-_11#Bridge_Rectifier_Fuses